A car rental company charges 50 dollars per day for the first 3 days and 40 dollars per day for each additional day. Let represent the total cost in dollars for renting a car for days. The value of is _________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to write and evaluate a piecewise function in a real-world context. The cost function is based on the number of days the car is rented, and the task is to find .
Key Concept Explanation
Writing and evaluating a piecewise function involves understanding the different rates for different ranges of input values, and then substituting the input value into the appropriate part of the function.
Step-by-step Solution
1. Write the cost function:
2. Substitute
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